“Dangerous Matrimony” (*1/2 out of four) was an uninvolving melodrama about a newly married couple (Rob Mayes and Sabina Gadecki) whose exotic vacation retreat turns into a nightmare when the husband is kidnapped and held for ransom and his mysterious assistant (Emily O’Brien) has to step in and negotiate the terms and simultaneously attempt to sort out the clues and find out whose behind the kidnapping. Since none of the characters are likeable or interesting, it’s hard to care about whose doing what to whom and thus hard to care about the movie itself. Jordi Ruiz Maso’s shimmering cinematography is film’s sole asset.